Such, in rough outline, is the great Apology—not quite the work of the fuller or baker at whom Celsus sneered. Yet it has not the accent of the conventional Greek or Latin gentleman, nor that of the philosophic Greek Christian. The style is unlike anything of the age. Everything in it is individual; there is hardly a quotation in the piece. Everything again is centripetal; Tertullian is too much in earnest to lose himself in the endless periods of the rhetorician, or in the charming fancies dear to the eclectic and especially to contemporary Platonists. Indeed his tone toward literature and philosophy is startlingly contemptuous, not least so when contrasted with that of Clement.

For this there are several reasons. First of all, like Carlyle, Tertullian has "to write with his nerves in a kind of blaze," and, like Carlyle, he says things strongly and sweepingly. It is partly temperament, partly the ingrown habit of the pleader. Something must be allowed to the man of moods, whose way it is to utter strongly what he feels for the moment. Such men do a service for which they have little thanks. Many moods go in them to the making of the mind, moods not peculiar to themselves. In most men feelings rarely find full and living expression, and something is gained when they are so expressed, even at the cost of apparent exaggeration. The sweeping half-truth at once suggests its complement to the man who utters it, and may stir very wholesome processes of thought in the milder person who hears it.

The philosophers

In the next place the philosophers may have deserved the criticism. Fine talk and idle talk, in philosophic terms, had disgusted Epictetus;[[143]] and for few has Lucian more mockery than for the philosophers of his day—Tertullian's day—with their platitudes and their beards, their flunkeyism and love of gain. Clement of Alexandria, who loved philosophy, had occasional hard words for the vanity of its professors.[[144]] For a man of Tertullian's earnestness they were too little serious. Gloriæ animal[[145]] is one of his phrases—a creature of vainglory was not likely to appeal to a man who lived in full view of the lion and the circus. He had made a root and branch cleavage with idolatry, because no men could die like the Christians unless they had the truth. The philosophers—to say nothing of their part now and then in stirring the people against the Christians—had made terms with polytheism, beast-worship, magic, all that was worst and falsest in paganism, "lovers of wisdom" and seekers after truth as they professed themselves to be. Ancient Philosophy suggests to the modern student the name of Heraclitus or Plato; but Tertullian lived in the same streets with Apuleius, philosopher and Platonist, humorist and gloriæ animal. But even Plato vexed Tertullian.[[146]] The "cock to be offered to Æsculapius" was too available a quotation in a world where the miracles of the great Healer were everywhere famous. The triflers and the dogmatists of the day used Plato's myths to confute the Christian doctrine of the resurrection. And of course Plato and Tertullian are in temperament so far apart, that an antipathy provoked by such causes was hardly to be overcome.

Again, Tertullian remarks frequently that heresy has the closest connexion with philosophy. Both handle the same questions: "Whence is evil, and why? and whence is man and how? and whence is God?"[[147]] Marcion, for instance, is "sick (like so many nowadays and, most of all, the heretics) with the question of evil, whence is evil?"[[148]] and turns to dualism. Or else "the heretics begin with questions of the resurrection, for the resurrection of the flesh they find harder to believe than the unity of the Godhead."[[149]] What Celsus, a typical product of contemporary philosophy, thought of the resurrection of the flesh we have seen—a "hope of worms!" Lastly, there was a strong tendency in the church at large for re-statement of the gospel in the terms of philosophy; and in such endeavours, as we know, there is always the danger of supposing the terms and the philosophy of the day to be more permanent and more valid than the experience which they are supposed to express. In Tertullian's century there seemed some prospect that every characteristic feature of the gospel would be so "re-stated" as to leave the gospel entirely indistinguishable from any other eclectic system of the moment. Jesus became a phantom, or an æon; his body, sidereal substance, which offered, Clement himself said, no material resistance to the touch of St John's hand. God divided, heaven gone, no hope or faith left possible in a non-real Christ even in this life—Christians would be indeed of all men most miserable, and morality would have no longer any basis nor any motive. What in all this could tempt a man to face the lions? It was not for this that Christians shed their blood—no, the Gnostics recommended flight in persecution. It is easy to understand the sweeping Viderint—Tertullian's usual phrase for dismissing people and ideas on whom no more is to be said—"Let them look to it who have produced a Stoic and Platonic and dialectic Christianity. We need no curiosity who have Jesus Christ, no inquiry who have the gospel."[[150]]

It was natural for Clement and his school to try to bring the gospel and philosophy to a common basis—a natural impulse, which all must share who speculate. The mistake has been that the church took their conclusions so readily and has continued to believe them. For Tertullian is, on his side, right, and we know in fact a great deal more about Jesus than we can know about the Logos.

The Præscription of heretics

Accordingly a large part of Tertullian's work, as a Christian, was the writing of treatises against heresy. He has in one book—de Præscriptionibus Hæreticorum—dealt with all heretics together. The Regula Fidei, which is a short creed,[[151]] was instituted, he says, by Christ, and is held among Christians without questions, "save those which heretics raise and which make heretics." On that Regula rests the Christian faith. To know nothing against it, is to know everything. But appeal is made to Scripture. We must then see who has the title to Scripture (possessio),[[152]] and whence it comes. Jesus Christ while on earth taught the twelve, and they went into the world and promulgated "the same doctrine of the same faith," founding churches in every city, from which other churches have taken faith and doctrine—he uses the metaphors of seed and of layers (tradux) from plants. Every day churches are so formed and duly counted Apostolic. Thus the immense numbers of churches may be reckoned equivalent to the one first church. No other than the Apostles are to be received, as no others were taught by Christ. "Thus it is established that every doctrine which agrees with those Apostolic mother-churches, the originals of the faith, is to be set down to truth, as in accordance with what the churches have received from the apostles, the apostles from Christ, and Christ from God."[[153]] But have the churches been faithful in the transmission of this body of doctrine? Suppose them all to have gone wrong, suppose the Holy Spirit to have been so negligent—is it likely that so vast a number should have wandered away into one faith? Again let Marcion and others show the history of their churches. Let their doctrines be compared with the Apostolic, and their varieties and contradictions will show they are not Apostolic. If then Truth be adjudged to those who walk by the Regula, duly transmitted through the church, the Apostles and Christ from God, then heretics have no right of appeal to the Scriptures which are not theirs. If they are heretics, they cannot be Christians; if they are not Christians, they have no right (ius) to Christian literature. "With what right (iure) Marcion, do you cut down my wood? By what licence, Valentinus, do you divert my springs? ... This is my estate; I have long held it; I am first in occupation; I trace my sure descent from the founders to whom the thing belonged. I am the heir of the Apostles."[[154]]

In this, as in most human arguments, there are strands of different value. The legal analogy gave a name to the book—præscriptio was the barring of a claim—but it is not the strongest line. Law rarely is. But Tertullian was not content to rule his opponents out of court. He used legal methods and manners too freely, but he knew well enough that these settled nothing. As a rule he had much stronger grounds for his attack. He wrote five books against Marcion to maintain the unity of the Godhead and the identity of the Father of Jesus, the God of the Old Testament and the God of Nature. His book against the Valentinians has a large element of humour in it—perhaps the best rejoinder to the framers of a cosmogony of so many æons, none demonstrable, all fanciful,—the thirty of them suggest to him the famous Latin sow of the Æneid.[[155]] Against Hermogenes he maintains the doctrine of the creation of the world from nothing. The hypothesis that God used pre-existing matter, makes matter antecedent and more or less equal to God. And then, in legal vein, he asks a question. How did God come to use matter? "These are the three ways in which another's property may be taken,—by right, by benefit, by assault, that is by title, by request, by violence." Hermogenes denies God's title in this case; which then of the other means does he prefer?[[156]]